The task of comment updating entails automatically updating a natural language
comment to reflect changes in the corresponding body of
code [1]}. For instance, in the Example
2 in Figure REF , the old @return needs to
be revised given the Java methods changes between two commits: instead of
directly returning the yaw Euler angle measured in radians, the equivant
angle measure in degrees is returned by calling Math.toDegrees()
in the new version.
